Incandescent gas-lamp.



PATENTED JAN. 15 19 07;

0. WIEDERHOLD.

INOANDESOENT GAS LAMP.

APPLIGATION FILED JUNESO, 1904 UNITED STATEg PATENT OFFICE.

OSCAR WIEDERHOLD, OF JERSEY CITY, NEW J hitSEif.

INCANDESCENT GAS-LAMP,

Specification of Letters Patent.

Patented Jan. 15,1907.

Application filed June 30, 1904. Serial No. 214,698.

To all whom it may concern:

Be it known that I, OSCAR WIEDERHOLD, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New J ersey, have invented certain new and useful Im roveme'nts in Incandescent Gas- Lamps, 0 which the following is a specification.

My invention relates to that class of incandescent gas-lamps known as the inverted type,'and has for its object to produce a construction whereby a thorough commingling or mixing of the air and gas will take place, the air will be brought within a flame in a cool condition, and there will be no clan-- ger of objectionable flashing back. These and other advantages of my construction will be set forth hereinafter.

In the claims I shall set forth the essential features of my invention without, however, desiring to limit myself to the construction shown, as any construction falling within the purview of the claims, as construed by the prior state of-the art, is contemplated by me as coming within my invention.

In the drawing I have shown, partly inelevation' and partly in section, a lamp in which my invention is embodied.

In the drawing, a indicates the delivery device for the air -and-gas mixture forming the nozzle or delivery end of the mixingchamber. Under certain circumstances this portion a may be regarded as a mixingchamber. In the present instance the delivery device a is shown as tubular at its lower end P and flaring at its upper end I) and formed with a reflecting-surface.

In the present instance the delivery device is made of porcelain. The passage through the delivery device is shown in the present instance as a p- "sage or mixing-chamber d ofa general tapering form. In order to provide a suitable support for the mantle, I have in the present instanc formed integral with the said porcelain device a series of lugs e, which are adapted to be engaged by lugged projections f, carried by-a ring f, to which the mantle g is secured.

'The delivery levice a'is suitably supported by a socket it, having an engaging edge *5 entering a groove 7' in the delivery device a. This socket h is supported from a ca is, into which a pipe Z is suitably screw-t eaded. This cap may be secured to the socket in any a globe-support, supporting the globe p,

which is shown as closed at the bottom and open at the top. Located within the socket h is a sieve or screen g, which, as shown, has an upwardly-facing concavity, so that thecentral portion of the sieve is lower than its edge.

The sieve is located at a point Where the interna width of the socket or chamber h is greatest. This sieve or'screen g is of the greatest importance, as it prevents flashing back, and thereby insures'the integrity of the mantle. I 7

In inverted incandescent lamps as heretofore proposed it has been suggested to pu the air-admission holes i the side of th socket h. I have found by experimenting with'such lamps that when the air is brought in at the oint mentioned there is great liability of imperfect combustion taking place and the mantle blackening. I entirely avoid such danger by bringing the air into contact with the gas at a considerable distance from the burning-point, in most cases beyond the sieve q. In the present instance I have shown a tube Z as of a general gooseneck shape and seated on the straight portion 1' and surmounting the conical portion 8 of an in-' supporting the arms m of a ring 0, servingas stance as having lateral air-openings t,

guarded by a petticoat u, and located below the delivery-point 'v of the burner. The feeding device is shown as mounted upon a plug or nipple w, which is in gas-conducting communication with a suitable gas-pipe or,

gas-service pi e. The nipple is provided with a suitab e regulator an of any desired form, herein shown as a plug 00, controlling,

an opening y, and operated by a crank-pin z.

It will be observed that by bringing the air into the gasway at a point remote from the burner and in some cases belowthedelivery-point of the burner, a thorough mix, ture will take place before the said mixture comes within the scope of the influence of the intensely-heated parts of the burner. It

will also be observed that the sieve or screen' that is to say, whichwill not impede the flow of gas but will effect a distribution thereof.

3 back.

butat the same time will not permit flashing Having described my invention, what I claim, and desire to secure by Letters Patent, is- 1 1. In an inverted incandescent gas-lamp the combination of a downwartlly delivering device for delivering an air-and-gas mixture .to the delivery-point of the burner, an enlarged expansion-chamber located above the said delivery-point, a sieve located in said expansion-chamber directly above the delivery-point and dividing the said chamber I into an upper and a lower chamber, the delivery device being in open communication with thelower chamber and an a1r-and'gas supplydevice in open communication with the'upperchamber.

' "ively decreasing in sectional area, an expansion-'mixing chamber located above the.

In an inverted incandescent lamp'the combination of a'dehvery device progresssaid delivery device, a sieve in the said expansion mixing-chamber dividing the said expansion mixing-chamber into two chamhers, the lowermost of which communicates with the delivery device. and the uppermost ofwhich-cominunicateswith the source of 3-. In an inverted incandescent lamp, an expansion and mixing chamber located d1- re'ctly abovethe burner-outlet, a sieve located in said chamber and dividing it into upper and lower compartments, the lower compartment conimiunicating with the burner, and a supply-pipe connected with the upper compartment and provided with an air-inlet located below the level of the burner-outlet.

4. In an inverted incandescent lamp, an enlarged expansion and mixing chamber exposed to thecombustion products but receiving'air from a point outside the path of .the combustion gases, and provided with an inletat the top and a tubular outlet at the directly abovethe outlet, the diameter ofbottom, and a sieve located in said chamber said sieve being equal to the largest internal diameter of the chamber.

5. In an inverted incandescent lamp, an

enlarged expansion and mixing chamber exposed to the combustion products but re ceiving air from a point outside the path of the coin'bustiongases, and provided with. an

inlet'at the top and a gradually-contracted vertical-tubular outlet at the bottom, and a sieve located in said chamber directly above 7, In an inverted incandescent lamp, an enlarged expansion and mixing chamber exposed to the combustion products but receiving air from a point outside the path of the combustion-gases, and provided with an inlet at the top and a tubular outlet at the bottom, and a sieve located in said chamber directly above the outlet, the said sieve being concaved upwardly.

In an inverted incandescent lamp, an

enlarged expansion and mixing chamber exposed to the combustion products, and provided with an inlet at the top and a tubular outlet at the bottom, and a sieve located in said chamber directly above the outlet, the

diameter of said sieve being equal to the p largest internal diameter of the chamber.

9. In an inverted incandescent lamp, an

enlarged expansion and mixing chamber exposed to the combustion products, and provided with an inlet at thetop and a gradually-contracted vertieal tubular outlet at the bottom, and a sieve located in said chamber directly above the outlet.

10. In an inverted incandescent lamp, an enlarged expansion and mixing chamber exposed to the combustion. products and provided with an inlet at the top and a tubular outlet at the bottom, and a sieve located in saidchamber directly above the outlet, the central portion of said sieve being lower than its edge.

11. In an inverted incandescent lamp, an enlarged expansion and mixing chamber'exposed to the combustion products, and provided with an inlet at the'top and a tubular outlet at the bottom, and a sieve located in said chamber directly above theoutlet, the said sieve being 'concaved upwardly.

OSCAR WIEDERHQLD."

Witnesses: I

M. D. BARNES,

GEO. E. Monsn.

ioo 

